Preparation method of magnetic graphene oxide adsorbent for adsorbing dye
A technology of oxide stone and adsorbent, which is applied in the fields of magnetic materials and environmental science, can solve problems that threaten human drinking water safety, biological health hazards, water pollution, etc., and achieve the effects of rapid separation, efficient removal, and high adsorption capacity
Inactive Publication Date: 2016-10-12
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology
Dyes can seep into surface water and groundwater along with industrial wastewater discharge, causing pollution to water bodies, seriously threatening the safety of drinking water for human beings, and leaving hidden dangers to the health of human beings and other organisms
Method used
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Embodiment 1
[0018] Graphite powder is oxidized to graphite oxide, and then ultrasonically exfoliated to graphene oxide. Add 1-10g divalent iron salt, 1-10g trivalent iron salt, 0.1-5g graphene oxide, 100-500ml distilled water in a beaker, sonicate in an ultrasonic device for 1-5 hours, then add NH 3 ·H 2 Adjust the pH to 8-12 with O, and sonicate for 1-5h. Finally, the obtained product is washed to neutrality by the centrifugal separation method, and dried in a vacuum drying oven under the condition of 40-100 DEG C to obtain the magnetic graphene oxide composite material.
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The invention provides a preparation method of a magnetic graphene oxide adsorbent for adsorbing a dye. Firstly, graphite powder is oxidized into graphite oxide, and then ultrasonic stripping is performed to obtain graphene oxide; 1-10 g of bivalent iron salt, 1-10 g of trivalent iron salt, 0.1-5 g of graphene oxide and 100-500 ml of distilled water are added to a beaker, ultrasonic treatment is performed in an ultrasonic device for 1-5 hours, then NH3H2O is added to regulate a pH to be 8-12, and ultrasonic treatment is performed for 1-5 hours; finally the obtained product is washed by using a centrifugal separation method to be neutral, drying is performed in a vacuum drying oven under the condition of 40-100 DEG C, namely a magnetic graphene oxide composite material is prepared. The material can be adopted as the adsorbent, rapid separation of the adsorbent and adsorbed substances can be achieved under the effect of an external magnetic field, and the adsorbent has the good effect of removing the dye and other organic matter in waste water.
Description
[0001] The invention relates to a preparation method of a magnetic graphene oxide adsorbent for absorbing dyes in wastewater, and relates to the technical fields of magnetic materials and environmental science. Background technique [0002] In recent years, dyes have been widely used in textile, paper, plastic and other industries. Dyestuffs discharged with industrial wastewater can infiltrate into surface water and groundwater, causing pollution to water bodies, seriously threatening the safety of human drinking water, and leaving hidden dangers to the health of human beings and other organisms. Currently commonly used biodegradation method, photocatalysis, ozone oxidation, electro-Fenton method, adsorption method, ion exchange method, membrane filtration method, etc. The adsorption method has attracted extensive attention of scientists due to its advantages of low cost, high removal efficiency and simple operation process. The key to the adsorption method is to prepare envi...
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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28
CPCB01J20/20B01J20/28009C02F1/283C02F2101/308
Inventor 刘泽玲王韬赵欢萍王慧
Owner TIANJIN POLYTECHNIC UNIV